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  1. Weight Distribution Hitch
  2. Weigh Safe
  3. 1700 lbs
  4. Fits 2-1/2 Inch Hitch
  5. WD With Sway Control
  6. Allows Backing Up
Weigh Safe True Tow Weight Distribution Hitch - 2.5" Shank - 8" Drop - 18.5K GTW, 1.8K TW
Weigh Safe

Weigh Safe True Tow Weight Distribution Hitch - 2.5" Shank - 8" Drop - 18.5K GTW, 1.8K TW

Part Number: WS37RR
In Stock
$1,280.00
Weight Distribution Hitch
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Pair the built-in tongue weight scale on this hitch with the easy-to-use instructional app, and get the perfect towing setup. We love how Weigh Safe makes it easy to get totally balanced, but we love the smooth ride this hitch offers even more. Great Prices for the best weight distribution hitch from Weigh Safe. Weigh Safe True Tow Weight Distribution Hitch - 2.5" Shank - 8" Drop - 18.5K GTW, 1.8K TW part number WS37RR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (113)
  • Q & A (0)
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  • Used (1)

Weigh Safe Weight Distribution Hitch - WS37RR

Highlights

  • Built-In Scale Keeps You Balanced: Lets you see tongue weight instantly so your load stays within the 10–15% sweet spot for safe, stable towing.
  • Sway Control Keeps You Steady: Integrated friction points correct sway from wind or passing trucks for a calm, controlled ride.
  • Easy Setup with Companion App: App calculates your ideal distributed tongue weight so you can dial in perfect balance every time.
  • Heavy-Duty for Big Loads: Rated for 1,850 lbs tongue weight and 18,500 lbs GTW with a 2-5/16" ball for serious towing strength.
  • Adjusts Precisely to Your Trailer: Lead screw on the hitch head fine-tunes load distribution to keep steering and braking consistent.
  • Back Up Without Disconnecting: System allows full maneuvering without removing sway control, simplifying campground or driveway moves.

Features to know about

Find Out Your Tongue Weight in Real Time: Built-In Scale on the Hitch

Balancing your trailer doesn’t have to be a guessing game. The Weigh Safe True Tow has a built-in tongue weight scale that tells you exactly where you stand before you even pull out of the driveway. If the reading isn’t in the 10–15% sweet spot of your gross towing weight, you can make quick adjustments to get things dialed in. Once your trailer’s balanced, steering feels steady and the whole setup tracks straight instead of wandering all over the road.

Close-up of the Weigh Safe True Tow hitch showing the built-in tongue weight scale for precise load measurement.

Set Up with Confidence: App-Guided Weight Distribution

Getting a weight distribution system tuned just right can take time, but the True Tow makes it simple. After you hook up, open the free app and enter your setup’s weight and measurements. The app gives you a target distributed tongue weight. From there, just turn the lead screw on the hitch head until the built-in scale matches that number. It takes the guesswork out of setup, giving you a solid, repeatable process every time.

Person adjusting the lead screw on the Weigh Safe True Tow hitch head to reach the correct distributed tongue weight.

Keeps You Steady and in Control: Integrated Sway Control with Trunnion Bars

Crosswinds and passing semis can make towing nerve-racking, but this system’s built-in tension and friction points actively correct sway. The trunnion-bar design keeps the trailer planted behind you so you’re not fighting the wheel on windy stretches or rough highways. You get a smooth, even ride and real peace of mind on long hauls.

Built Strong for Serious Loads: 18,500 lbs GTW and 1,850 lbs Tongue Weight Capacity

This hitch is made from high-strength steel with a stainless steel 2-5/16" hitch ball that resists rust and corrosion. It’s rated for 18,500 lbs maximum gross towing weight and 1,850 lbs tongue weight, with 8" maximum drop and 8-1/2" maximum rise. The shank fits a 2-1/2" receiver and is locked in place with the included hitch lock. Every piece is built to handle heavy use and backed by V5 and J684 safety certifications.

Stay Agile When Backing or Parking: System Allows Full Range of Motion

You don’t have to disconnect to back into a site or make tight turns. The True Tow’s design lets you reverse and maneuver without giving up sway control. That flexibility makes it easier to park, line up with a trailer, or navigate narrow spots without extra steps or tools.

Specs

Weight and Capacity

  • Tongue weight: 1,850 lbs
  • Maximum gross towing weight: 18,500 lbs

Diagram showing proper weight distribution between a truck and camper trailer, demonstrating safe towing setup for the Weigh Safe True Tow hitch.

Ball Information

  • Ball size: 2-5/16"

Application

  • Hitch receiver size: 2-1/2" x 2-1/2"
  • Rated for use with: weight distribution systems

Sway Control

  • Sway control bracket positioning: 27" - 32" back from center of coupler

Trailer Compatibility

  • Maximum trailer frame height: 6"
  • Use WS89RR (sold separately) if frame height is: 8"

Adjustment and Dimensions

  • Maximum drop: 8"
  • Maximum rise: 8-1/2"
  • Incremental height adjustment: 1-1/4"
  • Pin hole diameter: 5/8"

Warranty

  • Limited lifetime warranty

Note

  • Compatibility note: Some Bulldog-style sleeve-lock couplers may not work with this system because of the limited space between the hitch ball and the lead screw in the system head. There is approximately 2-1/2" between the screw and the center of the hitch ball.

TTHW8-2.5-KA Weigh Safe True Tow Heavyweight Weight Distribution Hitch - 8" Drop - 2-1/2" Shank - 18.5K

Installation Details WS37RR Installation instructions



Customer Satisfaction Score:

Ratings & Reviews

4.6

113 reviews
Review sort icon
Pair the built-in tongue weight scale on this hitch with the easy-to-use instructional app, and get the perfect towing setup. We love how Weigh Safe makes it easy to get totally balanced, but we love the smooth ride this hitch offers even more.

by:

Towing a 2025 Alliance 252RL (30') with a 2025 Silverado 1500 3.0 Duramax. With about 850 lbs on tongue and current measurements entered into the app, we run about 2100 lbs on the weigh safe hitch with the bars attached. The trailer towes perfect! Absolutely zero sway and very little bobbing cruising at 65 mph for 2 hours. I will test at slightly higher speeds another time. Proper setup per weigh safe instructions is a must! I had a dealer install it and they did not follow the instructions. I had to keep my speed below 60 and it still didn't feel great. After installing it per the instructions, it exceeded my expectations.



by:

The hitch is perfectly fine. The box was destroyed.



by:

Built like a tank,much better than my other hitch, it was used hitch that came with the camper that was welded together for their truck. I'm sure this one will do fine and had great reviews from wandering weekends on YouTube.



by:

The hitch is perfect for our camper. Installation was a breeze. I highly recommend weigh safe.
Customer service was amazing!!



by:

It pulls my RV better than any other weight distribution hitch I’ve owned.



by:

Rate based on early thoughts. Extremely well built with high, smooth tolerances. Instructions are well written. Haven't towed yet. Will next weekend.



by:

The hitch is amazing. It’s like there’s nothing behind the truck except for the weight. Shipping was incredibly fast and arrived as if directly off the shelf. Etrailer is truly exceptional in customer service and Joanne K was exceptional. Thank you!



by:

It makes pulling out Brinkley Z Air 315 (38Ft+) so much easier! I really like that backing up causes zero issues. Once I learned how to use the trailer tongue jack to relieve pressure during connecting, it made it so much easier.



by:

App and set up guide were easy to follow. Got everything tuned in and ready to tow. Solid construction.



by:

I’ve now used three different weight distribution hitches. While initial setup is a little bit more complex than the two I used previously, I was able to “dial it in” with the right settings the first time around versus trial and error. Once installed I towed an overloaded 16,000 pound trailer over 2,300 miles without any issues.



by:

16 F250 towing 24' encl trailer. So far 1500 miles towing has been great. Nearly zero porpoising or sway. Set up seemed difficult from the videos and instructions but was actually a breeze. Was very quick and easy. W the f250 4x4 you probably only need 4" drop as the 6" is pretty low. Although my TT has a ton of clearance so you may need the rise w those as the 250 hitch only sits at 19" i also have a curt trutrack 4p which is very heavy to place on the receiver. The WS feels way lighter but maybe it's just the way its balanced. Also like that you can make adjustments easier w the WS vs the curt. The min torque on the WS is 150ft lb which everyone has a trq wrench for that, do yourself a favor and put more torque as it'll need it. Nothing w WS its just what happens w movement.



by:

Towed a 2026 Jayco trailer 7300gvw with a 2026 Chvy Silverado 1500 Z71 5.3. Estimated my combined weight truck +trailer and loads at 13500, TW was 850, followed instructions, installed hitch and used app. Set distributed TW to 2250 per the app. Towed 800 miles from NC to NY, on I81, no sway, proposing or other issues. Hitch is outstanding.



by:

Manufacturer needs to either ship in 2 boxes or redesign/increase cardboard thickness. When I received the 1 box (UPS), it was almost split in half and full of packing tape to hold box together. I was missing the lifting bar and spring arms. Those 2 items weighed 54 lb themselves. etrailer was very responsive in getting me the replacement items from manufacturer since I was picking up a new trailer in a week. Website wouldn't allow me to upload pictures.



by:

The instructions described the setup well. I can open my tailgate with this hitch!!! AWESOME!!!!! It's good to have peace of mind regarding whether the hitch is adequate for the tongue weight. I was surprised to see that I was 100lbs over what the rated tongue is listed as. My last hitch was inadequate...this one is perfect. Haven't towed with it yet, but I feel quite confident that it will safely handle the load.



by:

This is my second WD hitch experience. Ease of setup and installation is better especially with the head unit. Not having to deal with spacers and washers makes this much easier. Bar installation, loading and unloading tension was a lot easier and didn't require the effort of last hitch. Adjusting for front wheelwell difference is a breeze making overall ride handling and ride quality super simple. This WD hitch is a definite "recommend". I'm long time etrailer.com customer and found this shipping experience to be even faster than transactions in the past. Way to go etrailer.com!



by:

I just received the Weigh Safe Heavyweight distribution hitch. The one quite heavy as can be imagined package arrived in perfect condition. After unboxing the hitch, I’m impressed with the quality and workmanship. I can not report on the performance at this time, however the installation manual and user guide is quite clear to understand and follow. Also etrailer customer service is fantastic and I recommend purchasing anything through them as I’m a repeat customer.



by:

Installed according to printed instructions and videos. Downloaded app and this thing will not keep my trailer from swaying. I was so hopeful but now regret I spent $1070 on this hitch and I can’t keep my trailer between the lines when there is any wind.  I have only used the hitch once and now going to have to buy a different hitch.



by:

Setup was quick and easy, VERY well built system. The washers they sent were not the proper grade so they split but etrailer QUICKLY replaced them as well as the brackets that were scratched while torquing. Overall I am very pleased with my purchase. I have a 2022 ram 2500 Cummins on 38s with a Carli 3.5 pintop soft suspension setup with king shocks and what a difference towing. I would say this system corrected 55% of my squat issue. Granted, the system is not designed to help with squat however it did! I did tow with the system and noticed a night and day difference in trailer performance. Shipping was fantastic and the box came intact and very well put together. I received my packaged the next day with free shipping. When I called to place the order, Tiffany was kind and polite and was VERY knowledgable on products. Thank you again!



by:

This is the best weight distribution hitch. The instructions are very detailed plus the downloadable app makes it easy to dial in the proper weight distribution across the trailer and truck. After installing mine, both the camper and tow vehicle were perfectly level. The installation is a very doable DIY project.



by:

The hardware and design look great. The issue is that it is dependent on a companion app. The app the manual says to download is incompatible with the current Android OS. The other available Weigh Safe app, won't take/use the "optional" weight distribution load ratings so that according to the app my F-150 with max tow package rated for 12000 lbs with 1220lb tongue wt rating when using a WDH. Weigh Safe customer support puts you on hold for 10 minutes and then punts you to voice mail. Hence the single star.



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by:

The item was delivered on schedule and has performed well thus far (one trip after setup). Set up was pretty simple. The only downside is that Weigh Safe is now made in CHINA.



by:

This product here.. completely impressed. The quality. And set up process is much much better than any other set up I’ve seen. Very impressed



by:

Kayleigh is a Rockstar!! Took care of me on short notice and followed up promptly!!


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See what our Experts say about this Weigh Safe Weight Distribution Hitch

  • Which Weigh Safe Weight Distribution for Towing Grand Design 25G
    Hey Eric, the Weigh Safe True Tow part # WS37RR that you referenced would be your best option for a weight distribution system for your Grand Design 25G. What are you towing the Grand Design with and does it have a 2.5 inch hitch?
    view full answer...
  • Will The Shank On The Weigh Safe True Tow Weight Distribution Hitch WS37RR Work In The Rise Position
    Hi Phillip! The Weigh Safe True Tow Weight Distribution Hitch - 2.5" Shank - 8" Drop - 18.5K GTW, 1.8K TW # WS37RR looks like it will be perfect for you! The shank on this can be turned over to the rise position and it will offer up to 8.5" of rise when you do that (see included image). You really only need 7", so you will not need a different shank or anything to get this working for you properly. Which is definitely nice. I will say that 27.75" for the coupler height is pretty tall....
    view full answer...
  • Recommended Weight Distribution Hitch for a Toy Hauler
    Hey Steve! I would go with the 18.5K GTW Weigh Safe True Tow Weight Distribution Hitch item # WS37RR over the 22K GTW item # WS99MR you were looking at. It looks like your Grand Design has a tongue weight between 1,200 lbs - 1,600 lbs and this will put you closer to that range. The 22K GTW item # WS99MR is going to be overkill. The 18.5K GTW Weigh Safe True Tow Weight Distribution Hitch item # WS37RR also comes with a 2-1/2" shank and has the same built-in tongue weight scale. I have...
    view full answer...
  • Recommended Weight Distribution System w/a 2-1/2" Shank for a 17,500 lbs Trailer
    Hey Arnaud, thanks for the information! The Weigh Safe True Tow Weight Distribution Hitch item # WS49MR would be a great option for a 17,500 lbs trailer. It will work with tongue weights up to 1,850 lbs but it's not going to be overrated for your trailer's lower tongue weight. The built in scale will also allow you to adjust how you load your trailer and account for the weight of anything in your F-250's bed. The Weigh Safe item # WS49MR has built in sway control that will keep your trailer...
    view full answer...
  • What Weight Distribution System do I Need for My Toy Hauler TT With Tongue Weight of 1670 Pounds?
    Hello Greg, I have an excellent option for you, but I’m afraid you’re right—the B&W Continuum Weight Distribution System w/ Sway Control # BW53FR is designed for a loaded tongue weight of 600-1,600 pounds. Even if you are only slightly over this range, you won’t get optimized performance. I do have another weight distribution system that would be a great fit for your setup: the Weigh Safe True Tow Weight Distribution Hitch # WS24RR for a 2" receiver (or # WS37RR for a 2 1/2" receiver)....
    view full answer...
  • Which Weigh Safe True Tow For 2024 Ram 2500 Towing Jayco Seismic 214
    Hey Tony! Yes, the Weigh Safe True Tow Weight Distribution Hitch # WS37RR is a good choice and would have the proper rating for your setup. The smaller 1.2k TW model is going to be rated too low, or right on the edge, once you factor in propane, batteries, the bike, and whatever else you're carrying. You also have to factor in the weight of anything in the truck bed behind the rear axle, since that gets added in as tongue weight. The 1,850 lb tongue weight rating of the # WS37RR will be...
    view full answer...
  • Recommended Weigh Safe Weight Distribution System for a Trailer w/a 1,400 lbs Tongue Weight
    Thanks for the information Matt and congrats on your new trailer! For your 12,000 lbs Grand Design Reflection, I recommend the Weigh Safe True Tow Weight Distribution Hitch item # WS24RR for a 2" hitch or item # WS37RR for a 2-1/2" hitch receiver. This system is going to be perfect for a 1,400 lbs tongue weight and the built in scale will help you play around with how you load your trailer. So long as you stay under the 1,850 lbs tongue weight limit you'll be good and at the same time...
    view full answer...


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Condition: Installed

Notes: There are install marks on the item from previously being test fitted. All hardware is included.

$1,164.27
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video Edited:
Joshua S
Employee Wilson B
Updated by:
Wilson B
Employee Katherine B
Updated by:
Katherine B
Employee Kim H
Written by:
Kim H

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